The name is wanting in the Massoretic Text and Septuagint of Isaiah 36:19.

Ivvah was a city apparently conquered by the Assyrians, and is mentioned by them, in the verses quoted, with Hamath and Arpad, Sepharvaim and Hena. It has been assimilated with the Avva of 2 Kings 17:24 as one of the places whence Sargon brought captives to Samaria, and identified with Hit on the Euphrates, between Anah and Ramadieh, but this seems improbable, as is also the suggestion that it is Emma, the modern `Imm, between Antioch and Aleppo. Hommel (Expository Times, April, 1898, 330) upholds the view that Hena and Ivvah, or, as he prefers to read, Avvah, are not places at all, but the names of the two chief gods of Hamath, Arpad and Sepharvaim. This would be consistent with 2 Kings 18:34; but 19:13:

"Where is the king .... of Sepharvaim, of Hena, and Ivvah?" and 17:31, where the gods of Sepharvaim are stated to be Adrammelech and Anammelech, raise serious difficulties. In all probability, the identification of Ivvah depends upon the correct localization of the twofold Sepharvaim, of which Hena and Ivvah may have been the names. The identification of Sepharvaim with the Babylonian Sip(p)ar is now practically abandoned.